1. University of Virginia, Department of Physics, Charlottesville, Virginia 22904, USA
2. LPNHE Paris, CNRS/IN2P3 and University of Paris VI & VII, Paris 75005, France
3. University of Illinois at Chicago, Chicago IL 60607-7059, USA
4. Fermi National Accelerator Laboratory Batavia, Illinois 60510, USA
5. Institució Catalana de Recerca i Estudis Avançats (ICREA) and Institut de Física d'Altes Energies (IFAE), Universitat Autònoma de Barcelona, E-08193 Bellaterra (Barcelona), Spain
6. Department of Physics, Duke University, Durham, NC 27708, USA
7. The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA
8. Department of Physics, Northwestern University, Evanston, IL 60208, USA
9. Department of Physics and Astronomy, University of Kansas, Lawrence, KS 66045, USA
10. Mitchell Institute for Fundamental Physics and Astronomy, Department of Physics and Astronomy, Texas A&M University, College Station, TX 77843, USA
11. Department of Physics, Indiana University, Bloomington, Indiana 47405, USA
12. Laboratory for HEP, Institute of Physics Belgrade, Pregrevica 118, 11080 Zemun, Serbia